Cerebrospinal fluid pleocytosis after seizures

Area of Science:

• Neurology
• Clinical Medicine

Background:

• Cerebrospinal fluid (CSF) pleocytosis following seizures has been anecdotally observed but lacks robust documentation.
• Elevated white blood cell counts in CSF can indicate various neurological conditions, necessitating careful differential diagnosis.

Purpose of the Study:

• To investigate the incidence and characteristics of CSF pleocytosis in adult patients diagnosed with seizures.
• To determine if seizure activity itself can cause CSF pleocytosis in the absence of other identifiable causes.

Main Methods:

• Retrospective review of adult patients admitted with seizure diagnosis between November 1979 and October 1980.
• Analysis of cerebrospinal fluid (CSF) findings, including white blood cell counts and differential, for 102 patients.
• Exclusion of patients with established causes for pleocytosis through laboratory and radiologic testing.

Main Results:

• 34% of patients (35 of 102) exhibited CSF pleocytosis.
• In 30% of cases (31 patients), pleocytosis persisted without an identifiable cause.
• Predominance of polymorphonuclear leukocytes (PMNs) was observed in 57% of initial CSF examinations, with specific patterns noted for ethanol withdrawal and cerebrovascular accidents.
• Pleocytosis was generally transient, resolving with patient recovery.

Conclusions:

• Seizure activity alone may lead to abnormal CSF leukocyte counts, though the underlying mechanism remains unclear.
• A comprehensive workup to exclude treatable disorders is essential before attributing CSF pleocytosis solely to seizures.